Linkage operation assembly, fall protection device and fall protection system

ABSTRACT

The present application relates to the technical field of linkage mechanisms, and provides a linkage operation assembly, a fall protection device and a fall protection system. The linkage operation assembly includes a fixed main body configured to be installed on an outer support surface of a rail and move along the rail; a second wheel body assembly installed on the fixed main body for rolling along an inner support surface of the rail and including a second wheel set and a drive rotary shaft; a third wheel body assembly installed on the fixed main body for rolling along an inner support surface of the rail and including a third wheel set and a driven rotary shaft; and a linkage member disposed between the drive rotary shaft and the driven rotary shaft. When the drive rotary shaft of the linkage operating assembly rotates, the second wheel set is driven to rotate, and the driven rotary shaft and the third wheel set are driven to rotate through the linkage member. Therefore, during the installation process of the linkage operation assembly, only the drive rotary shaft needs to be rotated to switch the state of the linkage operation assembly, so as to facilitate the installation of the linkage operation assembly. Similarly, when the linkage operation assembly is disassembled, only the drive rotary shaft needs to be rotated.

CROSS-REFERENCE TO RELATED APPLICATION

The present application is the U.S. National Phase under 35. U.S.C. §371 of International Application PCT/CN2020/085758, filed Apr. 21, 2020,which claims priority to Chinese patent application No. 2020102312215filed on Mar. 27, 2020, entitled “Linkage Operation Assembly, FallProtection Device and Fall Protection System”, Chinese patentapplication No. 2019215675296 filed on Sep. 20, 2019, entitled “SliderRotation Linkage Device”, Chinese patent application No. 2019215673835filed on Sep. 20, 2019, entitled “Fall Protection System” and Chinesepatent application No. 2019215673820 filed on Sep. 20, 2019, entitled“Locking Lever Trigger Mechanism of Fall Protection Device”, thedisclosure of which is hereby incorporated by reference in its entirety.

FIELD OF TECHNOLOGY

The present application relates to the technical field of linkagemechanisms, in particular to a linkage operation assembly, a fallprotection device and a fall protection system.

BACKGROUND

At present, with the development of society, operation in aerialclimbing environments and aerial transportation are fairly common. Inwind power, construction and other industries, in order to ensure theconstruction safety of high-altitude operators, it is necessary toinstall reliable fall protection apparatus. Rail fall arrester is animportant fall protection apparatus that connects dangerous verticalsurfaces in the industry and operators. Through the fall protectionapparatus, operators may move freely and safely along the rail. However,a rail-type fall arrester in the prior art may be installed on the railonly with the help of a conversion device or many individuals operatingat the same time. Therefore, the rail-type fall arrester has cumbersomeinstallation process and is very inconvenient in operation.

BRIEF SUMMARY

The present application is intended to address at least one of thetechnical problems in the prior art. To this end, the presentapplication provides a linkage operation assembly capable offacilitating the installation of a fall protection device or otherdevices on a rail.

The present application further provides a fall protection device.

The present application further provides a fall protection system.

A linkage operation assembly according to an embodiment of a firstaspect of the present application includes:

a fixed main body configured to be installed on an outer support surfaceof a rail and move along the rail;

a second wheel body assembly installed on the fixed main body andconfigured to roll along an inner support surface of the rail, thesecond wheel body assembly including a second wheel set connected to adrive rotary shaft;

a third wheel body assembly installed on the fixed main body andconfigured to roll along the inner support surface of the rail, thethird wheel body assembly including a third wheel set connected to adriven rotary shaft; and

a linkage member disposed between the drive rotary shaft and the drivenrotary shaft.

According to the linkage operation assembly of an embodiment of thepresent application, when the drive rotary shaft rotates, the secondwheel set is driven to rotate as a whole. Once the drive rotary shaftrotates, the driven rotary shaft will be driven to rotate through thelinkage, and then the third wheel set is driven to rotate. Therefore,during the installation process of the linkage operation assembly, onlythe drive rotary shaft needs to be rotated to switch the state of thelinkage operation assembly, so as to facilitate the installation of thelinkage operation assembly. Similarly, when the linkage operationassembly is disassembled, only the drive rotary shaft needs to berotated.

According to an embodiment of the present application, the linkagemember is a linkage plate, the drive rotary shaft is connected to thelinkage plate through a second connection, and the driven rotary shaftis connected to the linkage plate through a third connection.

According to an embodiment of the present application, the linkage plateis provided with an L-shaped lockup hole, including a transverse holesection and a longitudinal hole section communicating with thetransverse hole section; the fixed main body is provided with a fourthconnection movable along the transverse hole section, and the linkageplate is locked up when the fourth connection is located in thetransverse hole section, and is movable longitudinally when the fourthconnection is located in the longitudinal hole section.

According to an embodiment of the present application, the fixed mainbody is formed with a sliding hole, and the linkage operation assemblyfurther includes:

a sliding shaft configure to be slidably installed in the sliding hole,the sliding shaft being at least partially exposed to the sliding hole;and

a sixth spring, having an end connected to an end of the sliding shaft,and the other end abutting against a bottom of the sliding hole;

an end of the fourth connection is fixed to the sliding shaft, and theother end of the fourth connection extends into the lockup hole.

According to an embodiment of the present application, the fixed mainbody is provided with a guide limit wheel of the linkage plate, and theguide limit wheel is configured to limit the lateral movement of thelinkage plate such that the linkage plate moves along the longitudinaldirection.

According to an embodiment of the present application, the linkageoperation assembly includes a limit mechanism configured to limit therotation of the drive rotary shaft between two extreme positions, thedrive rotary shaft is disposed longitudinally in one of the extremepositions and disposed horizontally at the other one of the extremepositions.

According to an embodiment of the present application, in the case thatthe linkage member is a linkage plate, and the drive rotary shaft isconnected to the linkage plate through a second connection, the linkageoperation assembly further includes a cover of the linkage plate; alimit hole is formed on the cover and the limit mechanism includes thesecond connection and the limit hole, the second connection rotates inthe limit hole, and the limit hole is configured that the secondconnection is in limit fit with the inner wall of the limit hole whenthe drive rotary shaft rotates to the extreme positions and therotational angle of the drive rotary shaft is not greater than ninetydegrees.

According to an embodiment of the present application, the second wheelbody assembly further includes a slider fixed to the drive rotary shaft,and the slider is formed with a mounting groove for the second wheelset; the limit mechanism includes the slider and a protrusion formed onthe fixed main body; the slider is in limit fit with the protrusion whenthe drive rotary shaft rotates to the extreme positions.

According to an embodiment of the present application, a firstpositioning groove is disposed on the fixed main body, a sliding pin isdisposed in the first positioning groove, and a second positioninggroove and a third positioning groove are disposed on the drive rotaryshaft; and

the first positioning groove, the second positioning groove, and thethird positioning groove are configured such that when the fixed mainbody is reversely installed on the rail, and the drive rotary shaftrotates to one of the extreme positions, the first positioning groovecorresponds to the second positioning groove, such that the sliding pinpartially enters the second positioning groove; and when the fixed mainbody is reversely installed on the rail, and the drive rotary shaftrotates to the other one of the extreme positions, the first positioninggroove corresponds to the third positioning groove, so that the slidingpin partially enters the third positioning groove.

According to an embodiment of the present application, the drive rotaryshaft is connected to a drive rotation member, and the drive rotationmember is connected to the drive rotary shaft through a firstconnection.

The fixed main body is provided with a drive positioning hole and adriven positioning hole, the drive rotary shaft is provided with a firstreset hole, and the driven rotary shaft is provided with a second resethole; the linkage operation assembly further includes a plurality ofreset members, one end of each of a part of the reset members extendinto the drive positioning hole, and the other end of each of a part ofthe reset members extend into the first reset hole; and one end of eachof the remaining reset members extend into the driven positioning holeand the other end of each of the remaining reset members extend into thesecond reset hole.

A fall protection device according to an embodiment of a second aspectof the present application includes the above-mentioned linkageoperation assembly, and further includes:

a first wheel body assembly installed on the fixed main body andconfigured to roll along a rail, the first wheel body assembly includinga first wheel set and the first wheel set including a wheel shaft.

Since the fall protection device according to the embodiment of thepresent application includes the above-mentioned linkage operationassembly, it has all the technical effects of the above-mentionedlinkage operation assembly, which will not be repeated here.

According to an embodiment of the present application, the fallprotection device further includes:

a lockup member configured to be installed on the fixed main body and beswitched between a lockup position and a free position;

a first trigger mechanism configured to be installed to the fixed mainbody, wherein the first trigger mechanism includes a transmission memberand a drive member, the transmission member is configured to beinstalled to the wheel shaft and rotate with the wheel shaft, and thetransmission member is switched with changes in centrifugal forcebetween a first position, in which the transmission member is disengagedfrom the drive member in the first position, and a second position, inwhich the transmission member transmits the rotation of the wheel shaftto the drive member so that the drive member rotates to drive the lockupmember to move to the lockup position; and

the transmission member is trigger blocks, and a plurality of thetrigger blocks are connected through a first elastic member, the firstelastic member is in an original state in the first position, and isstretched in the second position; the drive member is a cam, the triggerblocks are disposed inside the cam, and the trigger blocks forms alimiting portion being in limit fit with the inner surface of the cam inthe second position; and the lockup member is a locking lever formedwith a first trigger surface of the locking lever matched with the cam.

According to an embodiment of the present application, the fallprotection device further includes:

a second trigger mechanism, installed on the fixed main body andincluding a swing lever that switches between a reset position, in whichthe swing lever drives the lockup member to move to the lockup position,and a force-bearing position; and

the swing lever includes a trigger end and a free end, the trigger endis connected to the fixed main body through a second elastic member, andthe free end is formed with a connecting hole configured to connect ashock absorption device; the lockup member is a locking lever formedwith a second trigger surface of the locking lever matched with thetrigger end.

According to an embodiment of the present application, the wheel shaftis installed to the fixed main body through a sliding mount base, thesliding mount base is connected to the fixed main body through a thirdelastic member, and the fixed main body is provided with a threadedfastener configured to adjust the third elastic member so that thesliding mount base drives the wheel shaft to move closer to or fartheraway from a mounting surface of the fixed main body.

A fall protection system according to an embodiment of a third aspect ofthe present application includes a rail, and further includes theabove-mentioned fall protection device installed on the rail.

Since the fall protection system according to the embodiment of thepresent application includes the above-mentioned fall protection device,it has all the technical effects of the above-mentioned fall protectiondevice, which will not be repeated here.

The additional aspects and advantages of the present application will bepartially given in the following description, and some thereof willbecome obvious from the following description, or be understood throughthe practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions disclosed inthe embodiments of the present application or the prior art, drawingsneeded in the descriptions of the embodiments or the prior art will bebriefly described below.

Obviously, the drawings in the following description only show some ofthe embodiments of the present application, and other drawings can beobtained according to these drawings without any creative effort forthose skilled in the art.

FIG. 1 is a schematic partial structural diagram of a linkage operationassembly in one form according to an embodiment of the presentapplication;

FIG. 2 is a schematic partial cross-sectional view of a linkageoperation assembly according to an embodiment of the presentapplication;

FIG. 3 is a schematic partial structural diagram of a linkage operationassembly in another form according to an embodiment of the presentapplication;

FIG. 4 is a schematic partial structural diagram of a linkage operationassembly in one form when a cover is installed thereon according to anembodiment of the present application;

FIG. 5 is a schematic partial structural diagram of a linkage operationassembly in another form when a cover is installed thereon according toan embodiment of the present application;

FIG. 6 is a schematic partial structural diagram of a linkage operationassembly in one form when linkage operation assembly is reverselyinstalled according to an embodiment of the present application;

FIG. 7 is a schematic partial structural diagram of a linkage operationassembly in another form when the linkage operation assembly isreversely installed according to an embodiment of the presentapplication;

FIG. 8 is a schematic structural diagram of a drive rotary shaftaccording to an embodiment of the present application.

FIG. 9 is a schematic partial exploded diagram of a linkage operationassembly according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a fall protection lockingassembly according to an embodiment of the present application;

FIG. 11 is a schematic cross-sectional view of a fall protection lockingassembly according to an embodiment of the present application;

FIG. 12 is a schematic exploded view of a fall protection lockingassembly according to an embodiment of the present application;

FIG. 13 is a schematic diagram showing a working state when a swinglever triggers a locking lever in a fall protection locking assemblyaccording to an embodiment of the present application;

FIG. 14 is a schematic diagram showing a working state when a camtriggers a locking lever in a fall protection locking assembly accordingto an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a fall protection lockingassembly showing the cross-sectional effect of a first trigger mechanismaccording to an embodiment of the present application;

FIG. 16 is a schematic structural diagram of a fixed main body in a fallprotection locking assembly according to an embodiment of the presentapplication;

FIG. 17 is a schematic diagram showing an assembly of a fall protectionsystem according to an embodiment of the present application;

FIG. 18 is a schematic structural diagram of a fall protection system inone form in which a rail is removed according to an embodiment of thepresent application;

FIG. 19 is a structural diagram of a fall protection system in anotherform in which a rail is removed therefrom according to an embodiment ofthe present application;

FIG. 20 is a schematic partial cross-sectional view of a fall protectionsystem when being triggered by a second trigger mechanism according toan embodiment of the present application;

FIG. 21 is a schematic partial cross-sectional view of a fall protectionsystem when being triggered by a first trigger mechanism according to anembodiment of the present application; and

FIG. 22 is a schematic exploded view of a fall protection system inwhich a rail is removed therefrom according to an embodiment of thepresent application;

REFERENCE NUMERALS

1 first trigger mechanism; 10 first wheel body assembly; 101 rotationwheel; 102 sliding mount base; 103 third spring; 104 support plate; 105cam; 1051 trigger surface of the cam; 106 wheel shaft 107 first pinshaft; 108 trigger block; 109 fixed base; 110 second pin shaft; 111first spring; 2 second trigger mechanism; 20 swing lever; 201 connectinghole; 202 action surface; 203 trigger surface of the swing lever; 3locking lever; 301 second trigger surface of the locking lever; 302first trigger surface of the locking lever; 303 positioning surface; 304support surface of the locking lever; 4 mandrel; 5 fixed main body; 501first limit surface; 502 second limit surface; 503 first mounting hole;504 second mounting hole; 505 fifth limit surface; 6 fourth spring; 7second spring; 8 adjustment screw;

01 second wheel body assembly; 0101 slider; 01011 lockup support slider;01012 running support slider; 0102 drive rotary shaft; 01021 secondpositioning groove; 01022 third positioning groove; 01023 first resethole; 0103 drive rotation member; 0104 first connection; 0105 secondconnection; 0106 fifth spring; 0107 roller; 0108 mounting shaft; 0109positioning washer; 02 third wheel body assembly; 0201 driven rotaryshaft; 02011 second reset hole; 0202 third connection; 03 linkage plate;0301 driven hole; 0302 lockup hole; 0303 drive hole; 0304 guide surface04 unlocking assembly; 0401 sliding shaft; 0402 sixth spring; 0403fourth connection; 05 cover; 0501 third limit surface; 0502 fourth limitsurface; 07 fixed screw; 08 guide limit wheel; 09 sliding pin; 0601first positioning groove; 0602 sliding hole; 0603 driven positioninghole; 0604 drive positioning hole;

006 rail; 009 carabiner; 0011 shock absorption device; 00601 sliderpassage; 00602 running limit surface; 00603 outer support surface; 00604inner support surface; 00605 rail support surface.

DETAILED DESCRIPTION

The specific embodiments of the present application are furtherdescribed in detail below in conjunction with the drawings andembodiments. The following embodiments are intended to illustrate thepresent application, but are not intended to limit the scope of thepresent application.

In the description of the embodiments of the present application, theterms “first”, “second”, “third”, and the like are used for descriptivepurposes only and are not to be construed as indicating or implyingrelative importance.

In the description of the embodiments of the present application, itshould be noted that unless explicitly specified and defined otherwise,the terms “connected with” and “connected” shall be understood broadly,for example, it may be either fixedly connected or detachably connected,or may be integrally connected; it may be mechanically connected, orelectrically connected; it may be directly connected, or indirectlyconnected through an intermediate medium. The specific meanings of theterms above in the embodiments of the present application can beunderstood by a person skilled in the art in accordance with specificconditions.

In the embodiments of the present application, unless otherwise clearlystated and defined, the first feature being located “on” or “under” thesecond feature means that the first feature is in direct contact withthe second feature or the first feature is in contact with the secondfeature by an intervening media. Also, the first feature being located“on”, “above” and “on top of” the second feature may mean that the firstfeature is directly on or above the second feature, or simply means thatthe level of the first feature is higher than the second feature. Thefirst feature being located “under”, “below” and “on bottom of” thesecond feature may mean that the first feature is directly under orbelow the second feature, or simply means that the level of the firstfeature is lower than the second feature.

In the description of this specification, descriptions with reference tothe terms “one embodiment”, “some embodiments”, “examples”, “specificexamples”, or “some examples” etc. mean that specific features,structure, materials or characteristics described in conjunction withthe embodiment or example are included in at least one embodiment orexample of the embodiments of the present application. In thisspecification, the schematic expressions of the above terms do notnecessarily refer to the same embodiment or example. Also, the describedspecific features, structures, materials or characteristics can becombined in any one or more embodiments or examples in a suitablemanner. In addition, those skilled in the art may integrate and combinethe different embodiments or examples and the features of the differentembodiments or examples described in this specification withoutcontradicting each other.

It is worth mentioning that the embodiments of the present applicationonly take the linkage operation component in the technical field ofaerial climbing and transportation operations as an example. Withoutloss of generality, the linkage operation component of the embodimentsof the present application is also applicable to other occasions, aslong as the requirements for the linkage operation of a plurality ofwheel body assemblies (for example, the second wheel body assembly andthe third wheel body assembly) on the rail is satisfied. Also, the fixedmain body of the linkage operation assembly has different specificstructures for different occasions.

According to an embodiment of the present application, referring toFIGS. 1 to 9 , the linkage operation assembly includes a fixed main body5, a second wheel body assembly 01 and a third wheel body assembly 02.In an embodiment, the fixed main body 5 is configured to be installed onthe outer support surface 00603 of the rail 006 and move along the outersupport surface 00603. The second wheel body assembly 01 is installed onthe fixed main body 5 for rolling along the inner support surface 00604of the rail 006, the second wheel body assembly 01 includes a secondwheel set, and the second wheel set is connected to the drive rotaryshaft 0102. The third wheel body assembly 02 is installed on the fixedmain body 5 for rolling along an inner support surface 00604 of the rail006, the third wheel body assembly 02 includes a third wheel setconnected to a driven rotary shaft 0201. A linkage member is disposedbetween the drive rotary shaft 0102 and the driven rotary shaft 0201.

Therefore, according to the linkage operation assembly of an embodimentof the present application, when the drive rotary shaft 0102 rotates,the second wheel set is driven to rotate as a whole. Once the driverotary shaft 0102 rotates, the driven rotary shaft 0201 will be drivento rotate through the linkage, and then the third wheel set is driven torotate. Therefore, during the installation process of the linkageoperation assembly, only the drive rotary shaft 0102 needs to be rotatedto switch the linkage operation assembly from a state shown in FIG. 1 toa state shown in FIG. 3 , so as to facilitate the installation of thelinkage operation assembly. Similarly, when the linkage operationassembly is disassembled, only the drive rotary shaft 0102 needs to berotated.

In one embodiment, the drive rotary shaft 0102 is connected to the driverotation member 0103, and when the drive rotation member 0103 rotates,the drive rotation member 0103 will drive the drive rotary shaft 0102 torotate. In an embodiment, the drive rotation member 0103 may be a rotaryknob, and the state of the linkage operation assembly may be switched byrotating the rotary knob to quickly disassemble and assemble the linkageoperation assembly. In addition to being driven by the drive rotationmember 0103, the drive rotary shaft 0102 may also be driven by otherstructures.

It should be noted that although only one third wheel body assembly 02as well as one driven rotary shaft 0201 is shown in the drawings, it isobvious that the number of third wheel body assembly 02 is not affectedby this example and, the number of driven rotary shaft 0201 is notlimited.

Referring to FIGS. 1 to 9 , the drive rotation member 0103 is connectedto the drive rotary shaft 0102 through a first connection 0104.

Referring to FIGS. 1 to 9 , the linkage member is a linkage plate 03,the drive rotary shaft 0102 is connected to the linkage plate 03 througha second connection 0105, and the driven rotary shaft 0201 is connectedto the linkage plate 03 through a third connection 0202.

Referring to FIGS. 1, 3 and 9 , the linkage plate 03 is provided with anL-shaped lockup hole 0302, including a transverse hole section and alongitudinal hole section communicating with the transverse holesection; the fixed main body 5 is provided with a fourth connection 0403movable along the transverse hole section, and the linkage plate 03 islocked up when the fourth connection 0403 is located in the transversehole section, and is movable longitudinally when the fourth connection0403 is located in the longitudinal hole section.

The linkage operation assembly according to an embodiment of the presentapplication includes an unlocking assembly 04. The unlocking assembly 04includes the above-mentioned fourth connection 0403, and furtherincludes a sliding shaft 0401 and a sixth spring 0402, the fourthconnection 0403 passes through the sliding hole 0602 on the fixed mainbody 5 to be connected to a sliding shaft 0401. By pressing the slidingshaft 0401, the sixth spring 0402 may be compressed, so that the fourthconnection 0403 moves to the longitudinal hole section of the lockuphole 0302. At this time, the rotation of the drive rotation member 0103may drive the linkage plate 03 to be lifted. When the fourth connection0403 is located in the transverse hole section of the lockup hole 0302,the linkage plate 03 cannot be lifted, and thus the drive rotationmember 0103 cannot be rotated.

In order to facilitate pressing the sliding shaft 0401 to adjust theposition of the fourth connection 0403 in the lockup hole 0302, thesliding shaft 0401 is at least partially exposed to the sliding hole0602.

In an embodiment, the fixed main body 5 is provided with a guide limitwheel 08 of the linkage plate 03, and the guide limit wheel 08 isconfigured to limit the lateral movement of the linkage plate 03 suchthat the linkage plate 03 moves along the longitudinal direction.

In an embodiment, the longitudinal direction in the “guide limit wheel08 configured to limit the lateral movement of the linkage plate 03 suchthat the linkage plate 03 moves along the longitudinal direction” refersto the extending direction of the rail 006, and the lateral direction isthe width direction of the rail 006, that is, the directionperpendicular to the longitudinal direction. When the drive rotationmember 0103 drives the drive rotary shaft 0102 to rotate, the secondconnection 0105 also rotates. Since the linkage plate 03 only moves inthe longitudinal direction, while the second connection 0105 drives thelinkage plate 03 to move longitudinally, it must move laterally relativeto the linkage plate 03. It can be seen that a drive hole 0303 extendingin the transverse direction is formed on the linkage plate 03, one endof the second connection 0105 is installed on the drive rotary shaft0102, and the other end of the second pin 0105 is located in the drivehole 0303 and connected to the linkage plate 03 through the drive hole0303. In the same way, a driven hole 0301 extending transversely isformed on the linkage plate 03, and the third connection 0202 isconnected to the linkage plate 03 through the driven hole 0301.

As shown in FIGS. 1, 3, 6, 7 and 9 , the number of guide limit wheels 08is four, and the guide limit wheels 08 are installed on the fixed mainbody 5 by fixed screws 07, the linkage plate 03 is formed with a guidesurface 0304, and it is ensured that the linkage plate 03 moves alongthe longitudinal direction through the matching between the guide limitwheel 08 and the guide surface 0304. Of course, the guide limit wheels08 are not necessary structures, and in the case that the guide limitwheels 08 are provided, the number and distribution position of theguide limit wheels 08 may also be adjusted as required.

The linkage operation device according to an embodiment of the presentapplication includes a limit mechanism configured to limit the rotationof the drive rotary shaft 0102 between two extreme positions, the driverotary shaft 0102 is disposed longitudinally in one of the extremepositions and disposed horizontally at the other one of the extremepositions. Here, “longitudinal” and “lateral” also refer to theextending direction of the rail 006 and the width direction of the rail006, respectively. When the drive rotary shaft 0102 is disposedlongitudinally, the state of the linkage operation assembly is shown inFIG. 3 , which may facilitate the disassembly and assembly of thelinkage operation assembly at this time. When the drive rotary shaft0102 is disposed horizontally, the state of the linkage operationassembly is shown in FIG. 1 . At this time, the linkage operationassembly may be fixed on the rail 006 to prevent the linkage operationassembly from being separated from the rail 006.

Referring to FIG. 9 , the linkage operation assembly according to anembodiment of the present application further includes a cover 05 of thelinkage plate 03, and the cover 05 is provided with a limit hole inwhich the second connection 0105 rotates. The limit hole and the secondconnection 0105 constitute the above-mentioned limit mechanism.

In one embodiment, the limit hole is configured that the secondconnection 0105 is in limit fit with the inner wall of the limit holewhen the drive rotary shaft 0102 rotates to the extreme positions andthe rotational angle of the drive rotary shaft 0102 is not greater thanninety degrees when the drive rotary shaft 0102 rotates to two extremepositions.

Of course, in addition to the structural form of the limit hole and thesecond connection 0105, the limit mechanism may also adopt otherstructural forms, as long as the limiting requirement for the driverotary shaft 0102 is satisfied. For example, the second wheel bodyassembly 01 further includes a slider 0101 fixed to the drive rotaryshaft 0102, and the slider 0101 is formed with a mounting groove for thesecond wheel set; the limit mechanism includes the slider 0101 and aprotrusion formed on the fixed main body 5; the slider 0101 is in limitfit with the protrusion of the fixed main body 5 when the drive rotaryshaft 0102 rotates to the extreme positions. In FIGS. 4 to 7 , when thelinkage operation assembly is switched between the two states, therotational angle of the drive rotary shaft 0102 is exactly ninetydegrees. If the rotational angle of the drive rotary shaft 0102 is lessthan ninety degrees, the disassembly and assembly requirements of thelinkage operation assembly may also be satisfied, thus the rotationalangle of the drive rotary shaft 0102 may also be defined to have asmaller value.

In FIG. 9 , the limit hole includes a third limit surface 0501 and afourth limit surface 0502. When the drive rotation member 0103 isrotated, the drive rotary shaft 0102 drives the second connection 0105to rotate in the limit hole to the first extreme position, the secondconnection 0105 is in contact with the third limit surface 0501, whilewhen the drive rotary shaft 0102 drives the second connection 0105 torotate to the second extreme position, the second connection 0105 is incontact with the fourth limit surface 0502. Through the matching betweenthe second connection 0105 and the third limit surface 0501 as well asthe fourth limit surface 0502, it is ensured that the linkage operationassembly may only be switched between the two forms shown in FIGS. 4 and5 .

Referring to FIGS. 6 to 9 , a first positioning groove 0601 is disposedon the fixed main body 5, a sliding pin 09 is disposed in the firstpositioning groove 0601, and a second positioning groove 01021 and athird positioning groove 01022 are disposed on the drive rotary shaft0102. When the linkage operation assembly is reversely installed on therail 006, and the drive rotary shaft 0102 rotates to one of the extremepositions, the first positioning groove 0601 corresponds to the secondpositioning groove 01021, such that the sliding pin 09 partially entersthe second positioning groove 01021; and when the linkage operationassembly is reversely installed on the rail 006, and the drive rotaryshaft 0102 rotates to the other one of the extreme positions, the firstpositioning groove 0601 corresponds to the third positioning groove01022, such that the sliding pin 09 partially enters the thirdpositioning groove 01022.

When the linkage operation assembly is installed normally, the slidingpin 09 is located in the first positioning groove 0601 of the fixed mainbody 5 under the action of gravity. At this time, there is no connectionrelationship between the sliding pin 09 and the drive rotary shaft 0102,and movement of the drive rotation axis 0102 does not be interfered.When the linkage operation assembly is reversely disposed, referring toFIGS. 6 and 7 , in the two different forms, the first positioning groove0601 corresponds to the second positioning groove 01021 and the thirdpositioning groove 01022 on the drive rotary shaft, respectively, andthe sliding pin 09 partially enters the second positioning groove 01021or the third positioning groove 01022 under the action of gravity. Atthis time, the sliding pin 09 may prevent the drive rotary shaft 0102from rotating, thereby making the installation of the linkage operationassembly impossible.

Referring to FIGS. 2, 8 and 9 , according to the linkage operationassembly of an embodiment of the present application, the fixed mainbody 5 is provided with a driven positioning hole 0603 and a drivepositioning hole 0604. The fifth spring 0106 with a reset function isconfigured to be installed between the fixed main body 5 and the driverotary shaft 0102, and between the fixed main body 5 and the drivenrotary shaft 0201. For the second wheel body assembly 01, one end of thefifth spring 0106 is installed in a first reset hole 01023 on the driverotary shaft 0102, and the other end of the fifth spring 0106 isinstalled in the drive positioning hole 0604 on the fixed main body 5and configured to install the drive rotary shaft 0102 to the fixed mainbody 5. For the third wheel body assembly, one end of the fifth spring0106 is installed in a second reset hole 02011 on the driven rotaryshaft 0201, and the other end of the fifth spring 0106 is installed inthe driven positioning hole 0603 on the fixed main body 5 and configuredto install the driven rotary shaft 0201 to the fixed main body 5.Herein, the fifth spring 0106 may also be replaced with other resetmembers having reset functions.

For the second wheel body assembly 01, the slider 0101 is installed onthe drive rotary shaft 0102 through the mounting shaft 0108, and theroller 0107 and the positioning washer 0109 are installed on themounting shaft 0108. For the third wheel body assembly 02, the slider0101 is installed on the driven rotary shaft 0201 through the mountingshaft 0108, and the roller 0107 and the positioning washer 0109 areinstalled on the mounting shaft 0108.

The first connection, second connection, third connection and fourthconnection mentioned above each may adopt a structural form of a pin.

According to an embodiment of the present application, provided is afall protection device, including the above-mentioned linkage operationassembly and the first wheel body assembly 10. In an embodiment, thefirst wheel body assembly is installed on the fixed main body 5 forrolling along the rail 006, for example, along an outer support surface00603 of the rail 006, the first wheel body assembly includes a firstwheel set, and the first wheel set includes the above-mentioned wheelshaft 106 and a rotation wheel 101 installed on the wheel shaft 106.

The fall protection device according to the embodiment of the presentapplication has the linkage operation assembly mentioned above and thusmay be quickly assembled and disassembled.

The fall protection device according to an embodiment of the presentapplication further includes a lockup member and a first triggermechanism 1. In an embodiment, the fixed main body 5 in theabove-mentioned linkage operation assembly, the lockup member, and thefirst trigger mechanism 1 constitute a fall protection locking assembly.

Referring to FIGS. 10 to 15 , the fall protection locking assemblyaccording to an embodiment of the present application includes a fixedmain body 5, a lockup member and a first trigger mechanism 1. The fixedmain body 5 is configured to be installed to an outer support surface ofthe rail 006 (the structure of the rail 006 is shown in FIGS. 17, 20 and21 ) through a first wheel body assembly containing a wheel shaft 106;the lockup member is installed on the fixed main body 5 and isswitchable between a lockup position and a free position; and the firsttrigger mechanism 1 is installed to the fixed main body 5 and includes atransmission member and a drive member, the transmission member isconfigured to be installed to the wheel shaft 106 and rotate with thewheel shaft 106, and the transmission member is switched with changes incentrifugal force (the transmission member rotates with the wheel shaft106 and is therefore subjected to centrifugal force) between a firstposition, in which the transmission member is disengaged from the drivemember in the first position, and a second position, in which thetransmission member transmits the rotation of the wheel shaft 106 to thedrive member so that the drive member rotates to drive the lockup memberto move to the lockup position.

For the fall protection locking assembly according to the embodiment ofthe present application, the transmission member of the first triggermechanism 1 is installed on the wheel shaft 106, and the transmissionmember rotates with the wheel shaft 106, and thus the transmissionmember has different rotational speeds and is subjected to differentcentrifugal forces. When the rotational speed of the wheel shaft 106exceeds the set rotational speed, the transmission member moves to thesecond position due to the centrifugal force, and the rotation of thewheel shaft 106 is transmitted to the drive member, and the drive memberdrives the lockup member to move to the lockup position. Therefore, thefall protection locking assembly provides the automatic locking of thefall protection device by monitoring the rotational speed of the wheelshaft 106. For example, when an operator accidentally falls, the wheelshaft 106 will have a higher rotational speed, and then the transmissionmember will move towards the drive member under the action ofcentrifugal force, the wheel shaft 106 drives the drive member to movetogether, thereby driving the lockup member moves to the lockup positionto ensure the safety of use.

Referring to FIGS. 10, 11 and 12 , in the fall protection lockingassembly of the present embodiment, the transmission member is triggerblocks 108, and a plurality of trigger blocks 108 are connected by afirst elastic member (first spring 111). The first elastic member is inan original state in the first position (see FIG. 11 ), and is stretchedin the second position (see FIG. 14 ). The drive member is a cam 105,and the trigger blocks 108 are disposed inside the cam 105 and forms alimiting portion. Referring to FIG. 14 , the limiting portion is inlimit fit with the inner surface of the cam 105 in the second position;and the lockup member is a locking lever 3 formed with a first triggersurface of the locking lever 302, the cam 105 is formed with a triggersurface of the cam 1051 such that the cam 105 acts on the first triggersurface of the locking lever 302 through the trigger surface of the cam1051 to drive the locking lever 3 to rotate. Referring to FIGS. 11 and12 , the locking lever 3 is formed with a positioning surface 303, andwhen the locking lever 3 moves to the lockup position, the positioningsurface 303 of the locking lever 3 is matched with the second limitsurface 502 on the fixed main body 5 (the first limit surface 501 willbe mentioned later when the second trigger mechanism 2 is described).

In an embodiment, the number of trigger blocks 108 is two, and the firstelastic member between the two trigger blocks 108 is the first spring111. Under normal circumstances, the first spring 111 is in the originalstate. At this time, one end of the first spring 111 is connected to oneof the trigger blocks 108, and the other end of the first spring 111 isconnected to the other trigger block 108. The two trigger blocks 108 areinstalled on the wheel shaft 106. When the rotational speed of the wheelshaft 106 exceeds the set rotational speed, the two trigger blocks 108tend to move away from the axis of the wheel shaft 106 due tocentrifugal force, such that the first spring 111 is stretched. When thetrigger blocks 108 move to the second position, a limit fit is formedbetween the trigger blocks 108 and the inner surface of the cam 105, andthe wheel shaft 106 transmits the movement to the cam 105 through thetrigger blocks 108.

In an embodiment, referring to FIGS. 11, 12 and 16 , the rotation wheel101 of the first wheel set is installed on the wheel shaft 106 throughthe first pin 107, and the trigger blocks 108 are installed on the wheelshaft 106 through the second pin 110. The cam 105 is installed on thewheel shaft 106 through the support plate 104 and the sliding mount base102. The sliding mount base 102 at one end of the wheel shaft 106 isinstalled on the fixed base 109 and then installed on the first mountinghole 503 of the fixed main body 5, and the sliding mount base 102 at theother end of the wheel shaft 106 is installed on the second mountinghole 504 of the fixed main body 5.

Of course, the specific structures of the transmission member, the drivemember and the lockup member are not limited by the examples here. Forexample, the transmission member may also be a transmission shaftinstalled on the wheel shaft 106. When the rotational speed of the wheelshaft 106 is greater than the set rotational speed, the transmissionshaft moves toward the drive member under the action of centrifugalforce, and the transmission shaft is in limit fit with the drive memberto achieve the purpose of transmitting the rotation of the wheel shaft106 to the drive member. For another example, when the transmissionmember is the trigger blocks 108, the shape and the number of thetrigger blocks 108 may not be limited by the drawings, for example, thenumber of the trigger block 108 may also be three or any number. Inaddition, the drive member is not necessarily the cam 105, as long as itmay follow the wheel shaft 106 to rotate and drive the lockup member tomove to the lockup position when the transmission member is in thesecond position. Similarly, the lockup member is not necessarily in theform of the locking lever 3, as long as it may be switched between thelockup position and the free position, and may be configured to lock thefall protection device to the rail 006 when it moves to the lockupposition.

According to an embodiment of the present application, referring toFIGS. 10 to 15 , the fall protection locking assembly further includes asecond trigger mechanism 2. The second trigger mechanism 2 is installedon the fixed main body 5 and includes a swing lever 20 that switchesbetween a reset position, in which the swing lever 20 drives the lockupmember to move to the lockup position, and a force-bearing position.

Specifically, under normal conditions, the swing lever 20 is directly orindirectly hung on the operator under the action of the gravity of thefall protection locking assembly, and the swing lever 20 does not exertany force on the lockup member at this time. In the case ofweightlessness, the force of gravity acting on the swing lever 20disappears. At this time, the swing lever 20 will exert a force on thelockup member, and the swing lever 20 and the first limit surface 501 ofthe fixed main body 5 will form a limit fit. The trigger surface 203 ofthe swing lever 20 exerts an action on the second trigger surface of thelocking lever 301, so that the lockup member moves to the lockupposition.

Therefore, for the fall protection locking assembly having theabove-mentioned first trigger mechanism 1 and the second triggermechanism 2, the two sets of trigger mechanisms act independently and donot interfere with each other, which ensures the safety and reliabilityof the fall protection device.

According to an embodiment of the present application, referring toFIGS. 11 and 13 , the swing lever 20 includes a trigger end (left end)and a free end (right end), the trigger end is connected to the fixedmain body 5 through a second elastic member, the free end is formed witha connecting hole 201 configured to connect a shock absorption device0011; the lockup member is a locking lever 3 formed with a secondtrigger surface 301 of the locking lever matched with the trigger end.

In addition, an action surface 202 is formed at the trigger end of theswing lever 20, and one end of the second elastic member is connected tothe fixed main body 5, and the other end of the second elastic member isconnected to the action surface 202. Under normal circumstances, theswing lever 20 is configured to lift upward the free end of the swinglever 20 by the gravity of the fall protection locking assembly. At thistime, the action surface 202 compresses the second elastic member, andthe trigger end and the locking lever 3 are independent of each other.When an accidental fall occurs, the swing lever 20 is no longersubjected to the gravity of the fall protection locking assembly at thistime, and then the second elastic member in the compressed state at thistime will exert a force on the swing lever 20 to make the swing lever 20rotate clockwise and drive the locking lever 3 to rotate clockwise tothe lockup position.

In an embodiment, the second elastic member is a second spring 7. Ofcourse, all the elastic members including the second elastic member inthe present application are not limited to the structure of springs, andother structures with deformation and reset functions can also beadopted.

Referring to FIGS. 11 to 13 , the locking lever 3 is connected to thefixed main body 5 through a fourth elastic member, and the fourthelastic member may be, but is not limited to, a fourth spring 6. Undernormal circumstances, the locking lever 3 is connected to the fixed mainbody 5 through the fourth spring 6. When the fourth spring 6 is in theoriginal state, the locking lever 3 is in a free position relative tothe lockup position. That is, when the locking lever 3 is in the freeposition, the movement of the fall protection device will not beaffected. In the case that the locking lever 3 is driven by theaforementioned cam 105 or the swing lever 20, the locking lever 3 movesto the lockup position, and then the locking lever 3 compresses thefourth spring 6 at this time.

Referring to FIGS. 10, 11 and 12 , the locking lever 3 and the swinglever 20 are both installed on the fixed main body 5 through a mandrel4, and the locking lever 3 and the swing lever 20 each rotate with themandrel 4 as the central axis.

In an embodiment, referring to FIGS. 12 and 15 , the wheel shaft 106 isinstalled to the fixed main body 5 through a sliding mount base 102, thesliding mount base 102 is connected to the fixed main body 5 through athird elastic member, and the fixed main body 5 is provided with athreaded fastener configured to adjust the state of the third elasticmember. Specifically, when the threaded fastener rotates, the state ofthe third elastic member changes, which in turn drives the sliding mountbase 102 to slide. The sliding mount base 102 drives the wheel shaft 106to move closer to or farther away from a mounting surface of the fixedmain body 5 when it slides. The mounting surface of the fixed main body5 refers to the surface of the fixed main body 5 facing the outersupport surface 00603, that is, the left side surface of the fixed mainbody 5 in FIGS. 13 and 14 . In an embodiment, the wheel shaft 106 isclose to the mounting surface of the fixed main body 5, so that when thefixed main body 5 is installed on the rail 006, the rotation wheel 101on the wheel shaft 106 gets closer to the outer support surface 00603 ofthe rail 006; the wheel shaft 106 is far away from the mounting surfaceof the fixed main body 5, which may ensure that the rotation wheel 101on the wheel shaft 106 and the outer support surface 00603 of the rail006 do not interfere with each other when the fixed main body 5 isinstalled on the rail 006.

Therefore, by adjusting the threaded fastener, it is possible to ensurea better fit between the rotation wheel 101 on the wheel shaft 106 andthe outer support surface 00603 of the rail 006, and to ensure that therotation wheel 101 may roll along the outer support surface 00603.

According to an embodiment of the present application, the threadedfastener is an adjustment screw 8, and the third elastic member is athird spring 103 with an adjustment function. The adjustment screw 8 isinstalled on the fixed main body 5, and the third spring 103 iscompressed by the adjustment screw 8 to adjust the position of the wheelshaft 106, so that the rotation wheel 101 of the first wheel set is incontact with the rail 006 in real time, and the wheel shaft 106 rotateswhen the first wheel set rotates to drive the trigger block 108 torotate. Once the centrifugal force of the trigger block 108 exceeds aset value, the trigger block 108 moves toward the cam 105 and forms alimit fit with the inner surface of the cam 105, so that the wheel shaft106 drives the cam 105 to rotate through the trigger block 108, and thecam 105 rotates to drive the locking lever 3 to move to the lockupposition. Therefore, it is ensured that the rotation wheel 101 of thefirst wheel set is in contact with the rail 006, and the purpose ofmonitoring the running speed of the fall protection device may beachieved. When the falling speed of the fall protection device exceeds aset value, the cam 105 triggers the locking lever 3 to move to thelockup position, and then the fall protection device is locked upon therail 006.

According to an embodiment of a third aspect of the present application,referring to FIGS. 17 to 22 , a fall protection system is provided,including a rail 006 and a fall protection device installed on the rail006. In addition, the fall protection system also includes a carabiner009 and a shock absorption device 0011.

Referring to FIGS. 17 and 20 to 22 , the rail 006 includes a sliderpassage 00601, a running limit surface 00602, an outer support surface00603, an inner support surface 00604, and a rail support surface 00605.The drive rotation member 0103 is rotated so that the fall protectiondevice is switched between the two states shown in FIGS. 18 and 19 .When the fall protection device is in the state shown in FIG. 19 , thefall protection device may be installed to the rail 006, or the fallprotection device may be detached from the rail 006 at this time. Whenthe fall protection device is in the state shown in FIG. 18 , the fallprotection device may be fixed in the rail 006 at this time, so that theslider 0101 is located in the slider passage 00601 and runs along theslider passage 00601. In addition, when the fall protection device isinstalled on the rail 006, the fifth limit surface 505 on the fixed mainbody 5 runs in the running limit surface 00602 and realizes thehorizontal limit of the fall protection device through it. When the fallprotection device is running, the outer support surface 00603 is incontact with the roller 0107 installed on the upper part of the fixedmain body 5, and the inner support surface 00604 is in contact with theroller 0107 installed on the running support slider 01012. When the fallprotection device is locked up, the outer support surface 00603 is incontact with the roller 0107 installed on the lower part of the fixedmain body 5, and the inner support surface 00604 is in contact with theroller 0107 installed on the lockup support slider 01011.

It is found from FIGS. 19-22 that, four pairs of wheel body assembliesare fixed on the fixed main body 5 according to the embodiment of thepresent application, including the above-mentioned second wheel bodyassembly 01 and the third wheel body assembly 02 for rolling along theinner support surface 00604 of the rail 006 and further including twopairs of wheel body assemblies for rolling along the outer supportsurface 00603 of the rail 006, and each of the four pairs of wheel bodyassemblies includes at least one pair of rollers 0107. In addition, afirst wheel body assembly is also installed on the fixed main body 5.The first wheel body assembly includes the above-mentioned rotationwheel 101. The rotation wheel 101 is in contact with the outer supportsurface 00603 in real time to monitor the running speed. The fallprotection device provides the lockup of the fall protection device bycontacting the support surface of the locking lever 304 of the lockinglever 3 with the rail support surface 00605 of the rail 006.

In the above-mentioned fall protection system, through the first triggermechanism 1 and the second trigger mechanism 2, the locking lever 3 istriggered to prevent the fall protection device from running downwardsrelative to the rail 006 abnormally and interacts the rail 006 while itmoves from the trigger position to the lock position. One end of theshock absorption device 0011 is installed on the connecting hole 201,and the other end of the shock absorption device 0011 is connected withthe carabiner 009.

The implementations above are only used to illustrate the presentapplication, but not to limit the present application. Although thepresent application has been described in detail with reference to theembodiments, those skilled in the art should understand that variouscombinations, modifications, or equivalent substitutions of thetechnical solutions of the present application do not depart from thescope of the technical solutions of the present application, and shouldbe covered by the scope of the claims of the present application.

What is claimed is:
 1. A linkage operation assembly, comprising: a fixedmain body configured to be installed on an outer support surface of arail and move along the rail; a second wheel body assembly installed onthe fixed main body and configured to roll along an inner supportsurface of the rail, the second wheel body assembly comprising a secondwheel set connected to a drive rotary shaft; a third wheel body assemblyinstalled on the fixed main body and configured to roll along the innersupport surface of the rail, the third wheel body assembly comprising athird wheel set connected to a driven rotary shaft; and a linkage memberdisposed between the drive rotary shaft and the driven rotary shaft;wherein the linkage member is a linkage plate, the drive rotary shaft isconnected to the linkage plate through a second connection, and thedriven rotary shaft is connected to the linkage plate through a thirdconnection.
 2. The linkage operation assembly of claim 1, wherein thelinkage plate is provided with an L-shaped lockup hole, comprising atransverse hole section and a longitudinal hole section communicatingwith the transverse hole section; the fixed main body is provided with afourth connection movable along the transverse hole section, and thelinkage plate is locked when the fourth connection is located in thetransverse hole section and is movable longitudinally when the fourthconnection is located in the longitudinal hole section.
 3. The linkageoperation assembly of claim 2, wherein the fixed main body is formedwith a sliding hole, and the linkage operation assembly furthercomprises: a sliding shaft configure to be slidably installed in thesliding hole, the sliding shaft being at least partially exposed to thesliding hole; and a sixth spring, having an end connected to an end ofthe sliding shaft, and the other end abutting against a bottom of thesliding hole; an end of the fourth connection is fixed to the slidingshaft, and the other end of the fourth connection extends into thelockup hole.
 4. The linkage operation assembly of claim 1, wherein thefixed main body is provided with a guide limit wheel of the linkageplate, and the guide limit wheel is configured to limit the lateralmovement of the linkage plate such that the linkage plate moves alongthe longitudinal direction.
 5. The linkage operation assembly of any oneof claims 1 and 2 to 4, further comprising a limit mechanism configuredto limit the rotation of the drive rotary shaft between two extremepositions, the drive rotary shaft is disposed longitudinally in one ofthe extreme positions and disposed horizontally at the other one of theextreme positions.
 6. The linkage operation assembly of claim 5,wherein, in the case that the linkage member is the linkage plate, andthe drive rotary shaft is connected to the linkage plate through thesecond connection, the linkage operation assembly further comprises acover of the linkage plate; a limit hole is formed on the cover and thelimit mechanism comprises the second connection and the limit hole, thesecond connection rotates in the limit hole, and the limit hole isconfigured that the second connection is in limit fit with the innerwall of the limit hole when the drive rotary shaft rotates to theextreme positions and the rotational angle of the drive rotary shaft isnot greater than ninety degrees.
 7. The linkage operation assembly ofclaim 5, wherein the second wheel body assembly further comprises aslider fixed to the drive rotary shaft, and the slider is formed with amounting groove for the second wheel set; the limit mechanism comprisesthe slider and a protrusion formed on the fixed main body; the slider isin limit fit with the protrusion when the drive rotary shaft rotates tothe extreme positions.
 8. The linkage operation assembly of claim 5,wherein a first positioning groove is disposed on the fixed main body, asliding pin is disposed in the first positioning groove, and a secondpositioning groove and a third positioning groove are disposed on thedrive rotary shaft; and the first positioning groove, the secondpositioning groove, and the third positioning groove are configured suchthat when the fixed main body is reversely installed on the rail, andthe drive rotary shaft rotates to one of the extreme positions, thefirst positioning groove corresponds to the second positioning groove,such that the sliding pin partially enters the second positioninggroove; and when the fixed main body is reversely installed on the rail,and the drive rotary shaft rotates to the other one of the extremepositions, the first positioning groove corresponds to the thirdpositioning groove, so that the sliding pin partially enters the thirdpositioning groove.
 9. The linkage operation assembly of any one ofclaims 1 and 2 to 4, wherein the drive rotary shaft is connected to adrive rotation member, and the drive rotation member is connected to thedrive rotary shaft through a first connection.
 10. The linkage operationassembly of any one of claims 1 and 2 to 4, wherein the fixed main bodyis provided with a drive positioning hole and a driven positioning hole,the drive rotary shaft is provided with a first reset hole, and thedriven rotary shaft is provided with a second reset hole; the linkageoperation assembly further comprises a plurality of reset members, oneend of each of a part of the reset members extend into the drivepositioning hole, and the other end of each of a part of the resetmembers extend into the first reset hole; and one end of each of theremaining reset members extend into the driven positioning hole and theother end of each of the remaining reset members extend into the secondreset hole.
 11. A fall protection device, comprising the linkageoperation assembly of claim 1, further comprising: a first wheel bodyassembly installed on the fixed main body and configured to roll along arail, the first wheel body assembly comprising a first wheel set and thefirst wheel set comprising a wheel shaft.
 12. The fall protection deviceof claim 11, further comprising: a lockup member configured to beinstalled on the fixed main body and be switched between a lockupposition and a free position; a first trigger mechanism configured to beinstalled to the fixed main body, wherein the first trigger mechanismcomprises a transmission member and a drive member, the transmissionmember is configured to be installed to the wheel shaft and rotate withthe wheel shaft, and the transmission member is switched with changes incentrifugal force between a first position, in which the transmissionmember is disengaged from the drive member in the first position, and asecond position, in which the transmission member transmits the rotationof the wheel shaft to the drive member so that the drive member rotatesto drive the lockup member to move to the lockup position; and thetransmission member is trigger blocks, and a plurality of the triggerblocks are connected through a first elastic member, the first elasticmember is in an original state in the first position, and is stretchedin the second position; the drive member is a cam, the trigger blocksare disposed inside the cam, and the trigger blocks forms a limitingportion being in limit fit with the inner surface of the cam in thesecond position; and the lockup member is a locking lever formed with afirst trigger surface of the locking lever matched with the cam.
 13. Thefall protection device of claim 12, further comprising: a second triggermechanism, installed on the fixed main body and comprising a swing leverthat switches between a reset position, in which the swing lever drivesthe lockup member to move to the lockup position, and a force-bearingposition; and the swing lever comprises a trigger end and a free end,the trigger end is connected to the fixed main body through a secondelastic member, and the free end is formed with a connecting holeconfigured to connect a shock absorption device; the lockup member is alocking lever formed with a second trigger surface of the locking levermatched with the trigger end.
 14. The fall protection device of any oneof claims 11 to 13, wherein the wheel shaft is installed to the fixedmain body through a sliding mount base, the sliding mount base isconnected to the fixed main body through a third elastic member, and thefixed main body is provided with a threaded fastener configured toadjust the third elastic member so that the sliding mount base drivesthe wheel shaft to move closer to or farther away from a mountingsurface of the fixed main body.
 15. A fall protection system, comprisinga rail, further comprising the fall protection device according to anyone of claims 11 to 13 installed on the rail.